Time-actuated electric switch.



D. A. CA'120.V TIME AGTUVATED ELECTRIC SWITGH.

APPLICATION FILED JAN. 6, 1912.

' 1,064,290. n1-,emma 10,1913.

7r ZL-71] g Caio 'provide a construction of this character of UNITED srnrns PATENT onnion.

DEAN A. oA'ro, or SPRINGFIELD, ILLINOIS.

TIM-ACTUATED ELECTRIC SWITCH. i i

Specification of Letters Patent.

Patented J une 16, '1912! Application led January 6, 1912. Serial No. 669,515.

to provide a very 4simple switch actuating deViceadapted-for closing a circuit, such as say a ljamp circuit at a predetermined moment, and again breaking said circuit at a later predetermined moment.

A furtherobject of the invention' is ito extreme simplicity, entirely positive vin its action, readily set and having very few parts tofgct out of order.

Other objects wlll appea the following description.

My invention is illustrated inthe accom-v panying drawingsV wherein: t

Figure 1 isa longitudinal sectional view on the line 1--1 of Fig. 2. Fig. 2 is a longitudinal .sectional4 'view on the line 21-2 of Fig. 1. Fig. 3 is a perspective view of the two detents detached from the related mechanisln. Fig. 4 is a perspective view -of the switch detached from the casing. Fig. 5

rin the course of is a sectional perspective view of the switch controlling .disk 7.

Corresponding and like parts are referred l to in the following description and indicated in all the views of the accompanying drawingsv by the same reference characters.

Referring to these drawings, 2 designates' a casing fof any suitable constructionl but shown as rectangular in form and provided on its outside face with aclo'ck dial 3. This clock dial is not absolutely necessary to the proper operation Vof the switch, "but it 1s extremely. convenient.

Passing through the face of the casing is the arbor 4 constituting the hour arbor or shaft of-V any desired clock mechanism'.

This hour arbor carriesthehour hand 5- which moves around the dial 3, and'also mounted upon the arbor 4 is.l a minute hand 6.

Carried upon the hour arbor and 'rotating therewith is a disk? preferably composed of' sheet metal, the disk 7 bein spaced from the dial 3 and from the hands. The disk 7 is provided around its margin with a plurality of openings 8. rlhese openings preferably extend entirely through the disk and eov are preferably entirely screw threadeih.

Preferably there are `twenty-four of `these openings corresponding yto the hours and half hours-of the day or night. lThere may, however, be more or less of these openings as desued. ForI instance, if the clock is a Itwenty-four hour clock, there will be 48 ofl these openings corresponding to the twentyfour hours .and the half hours. If, however,

the clock is a twelve hour clock, then there will be 24 openings as above stated.'

Preferably the fa'ce of the disk 7 is pro'- vided with a series of numerals placed ad- .jacent .to the perfor-ations 8 and indicating the hours of the day, as for instance from one to twelve. Pins-9 and l() are provided insertable into the openings 8. The pin 9 is preferably screw threaded at its extrem- 'ity so that when inserted in any one of the 'screw threaded openings 8, the pin will project'outward from the face ofthe ldisk 7. The pin 1,0 is provided at oneextremity with a head 11, and the pin is screw threaded adjacent to the head so that the pin may be inserted entirely through the disk 7 in the' position shown in Fig'. 5, and the screw threaded portion of the pin engaged with the disk so' that the shank of the pin' will.

project behind the disk 7 Pivotally supported within the interior of the casing 2, and as shown upon a cross piece 12, are a pair of detents designated. 13 4and 14. The detent 14 is spaced from the detent 13 and the upper en'd of the detent 14 extends upward and over the face of the disk 7 and in position where it may be. en` .gaged by a pin 9 4disposed in any oneof lthe holes 8. The detent 13 also extends over the rear face of the disk and overlapsthe margin thereof in position to be 'engaged vby the pin 10. The other extremities of the detents 13 and 14are formed, one with-a .hoolshaped terminal .endfl and the other with a rectangular recessxat it'slext'remity providing a shoulder 16V-The member 14 'is (preferably-formed with the hook-shaped en while the member 13 ,is provided with the' shoulder 16. The extremity ofthe member 14 is beveled as at 17 for a p'r'pose to'l be later described. Retractile springs 18 are supported at one end' in any suitable manner and at. their other ends engage, each with one of the detents 13 and 14. Stops l 19 are disposed so as to support the detents v 5 in the position shown in (Fig. 1 against the force of the springs and yet permit the springs to be moved away from the stops and against thel force of'the springs by:`

. means of the pins 9 and 10.'v lo Mounted in the other end of the casing" 2 is a double knife switch.` v@ne blade of this knife switch is designated and the other blade 21. These blades are mountedupon acommon pivotrod 22,- and surrounding this '15 rod are coiled springs 23 and 24, the spring .23 acting to 'force the blade 20 toward the end of the casing and the spring 24 acting to force the blade 21 away from the end of the casing or in a reverse direction to the 20 blade 20.

Supported 'in any suitable manner in the path of movement of tlie.`bla d e s 20 and 21 are the spring contact* jews/25 and 26, the jaws 25 engaging the blade 20 `.when it is forced downward and the jaws -26 engaging the blade 21 when 'it is forced` downward. The pairs of contact jaws '25 and 26 are electrically connected to each other and the. -pair of jaws 25 is electrically connected 30 through the blade 2O to a line wire 27, while the blade 21 is electrically connected through the blade 21 to a line wlr'e 28. It will thus be seen that unless both blades are in elecs trical engagement with the jawsr25 and 2G, the circuit will not be completed through the line wires 27 and 28.

In the illustration of myinvention, the switch blades and the jaws are shown 'as mounted upon a slantingv brace 29,- but it 40 will be understood that they may be mounted in any-suitable manner. For 'the purpose of placing the blades 20 and 21 in proper operativeposition, I provide 4the actuating rods 30 and 31, the rod 30 being operatively connected to the blade 20, while thevrod 31 is operatively connected to the extremity of the blade 21. The `engaging extremities of the blades 20 and 21 and the rods 3() and 31 \areinsulated from each other. Each of the rods 30 and 31 is provided' at,l its end with a suitable terminal. forming alliandle whereby the rod may-be actuated.' QWhen'the rod 31 is pulled down, the blade 2.1i be drawn into engagement with its Contact ,jaws 26 against the force of the spring 24. When the rod 30 is pushed upward, the blade20 is forced out of engagement with its contact jaws25 against the force ofthe spring23. Attached to the blade 20 and rextending 50 out therefrom is a rod32 adapted to engage with the detent 14, while pivotallyfattach'ed to the blade 21 is a rod '33 adapted forengagement with the detent 13.. Both of the rrods 32' and 33 have pivotal engaT ement with the blades'. 20 and 21 but are insu ated therefrom. The extremity ofthe rod 32 is formed withl a hook-shaped terminal end 34 which is fend of the detent 14 extends laterally in the same direction, as illustrated -in the eleva` tion,-.F ig. 2. The terminal end of the rod 33 is laterally bent as at 35 so as to provide a relatively large surface -to abut against the shoulder 16 on the extremityof the detent 13. Preferably the rods 32 and 38 pass through a wooden partition designated 36, the partition forming a guide for these rods 32 and 33. lt is obvious, however, that the internal arrangement of the casing 2 may b varied in many ways.

The operation of my invention .is as follows: aWhen it is desired. to set the device so as to close a certain vcircuitat a certain time, the circuit will remainlclosed for a definite period and then be broken. The pin 9 is to be set upon the front face of the disk 7 in any desired one of the openings or holes 8.V that the circuit shall be completed at six oclock, the pin is set in the hole adjacent to the ligure 6. The pin 10 is to-be placed upon the reverse side'of the disk in any desired opening Stherein, and if it is desired that the circuit should be broken, say at half past'A ten, the pin is set in the half past ten hole. The parts being arranged as described, the rod 31 is pulled, thus drawing the knife blade 21 into engagement with its contacts. The rod v30 .is forced upward, thus forcing the blade 20 out of engagement with its contact jaws. rl'he downwardpull uponthe- -rod 33 caused by the downward movement vof the switch blade 21, causes the .1

extremity of the rod 33' to ride along the face of the 'detent 13 'until the extremity snaps into the recess at the lower extremity of the detent and brings the extremity of the' rod B in abutting engagement with the 4shoulder' 16. ine upward movement of the blade 20 causes the rod 32l to move inward Preferably the hooked terminal` lf for instance it is desired until its hooked end engages over the hooked 1 4will ,holdl the rod 32 and the switch blade 2O in their raised position against the action ofv the spring 23, and that the shoulder 1G will holdthe rod 33 andv the blade 21 in their depressed position against the action of the spring 24. rThe parts will remain in thisposition until thc pin'9 upon the face of the dish 'i' strikes the upper extremity of the detent 14. This will turn tite detent upon its' pivot and. release its hooked termiiac y nal end 15v from engagement with' the hooked terminal end of the rod 32, whereupon the spring 23 cwill cause ythe knife blade 20 to engage its-contact jaws and the circuit will be completed through thel line inginto the path .of movement of the said wires 27-and Q8. -The circuit will remain' completed until in the course of time, -the disk 7 has rotated to a sufiicient degree to..` bring the pin 1() into contact with the de-- tent 13. I'Vhen this occurs, the detent will be turned upon its pivot as before described, the shoulder 16 will slip ott from its engagement with the extremity of the rod 33 and the spring 2e will cause the blade 2l to move out of engagement with its Contact jaws 2G, thus breaking the ,circuit through the line wires 2? and28. The device may be again set for a like movement'by p ushing upward on the rod 30 and-pulling downward upon the rod 31. v

It will be of course understood `that when I refer to the rod 31 and the rod 30 as being pushed upward or downward, I aml describing the-motion of these-rods when the device is arrangedas illustrated.- It 4will be obvious, however, that the casing might be arranged upon its side equally well, in whichcase the rodswould be pushed laterally. While I have shown what I believe 'to be a very eiective form of my invention I do not wish to be limited thereto as various minor changes might be made therein Awithout departing from the spirit of the invention. The device is very simple, has very few parts, the clockwork is et' an ordinary character, and there is nothing which can readily get out of order.

lVhat I claim is:

1. An electric time switch including a pair of switch `blades, contact members with whicln they electrically coact, 4means for lurging one blade into and the other blade ont of engagement with the correspondingv contact member, a clock actuated disk provided with a series of perforations upon its margin, pins shiftable-into any of said perforations, links extending upward from the switch blades, and pivoted 1nembers,'o'ne for each of said links engaging the said links when in one position to hold the blades in operative position against the force of the urging means, said pivoted members eX` tending into the vpathpf movement of the pins whereby the pivoted membergniay be shifted out of engagementwith the llinks.

2. In an electric time switch, the combination with a pair of switch blades, contact members, one for each switch blade, means for vyieldingly .urging one of said switch blades out of engagement with its corresponding Contact member and the other blade into such engagement, of a `clock actuated disk provided with a series of perforations upon its margin,

able into any of said perforations, links piv- :a shoulder engaging ,llinks to .said pins projecting disk and the other pin a pair'of pins shift-j.

otallyconnected to the respective switch blades'and extending toward said disk, one 'of said links having a hook-shaped terminal end, and pivoted latches mounted above the links, the upper ends of the latches extendpins, one of said latches being formed with the end ottone of said prevent an upward movement thereof, theother latch being provided with a hook engaging the hook-shaped terminalv end of `the other link and preventing any downward movement thereof when so" engaged.l

3. In an electric time switch, the combination with a pair of switch blades, a pair of corresponding contact members and yielding means for urging one of said blades in engagement' with its cont'act member 'andythe other of said blades outof such engagement, of clock mechanism including a clock lactuated disk provided with a series of perforations on its margin, a pair of pins shiftablefintoany-otsaid perforations, one of said pins projecting :from one-side of the disk and the other pin projecting 'from the other side of the disk, links pivoted to the switch blades and extending upward therefrom, a guide for said links, intermediate their ends, the upper ends of the latchesextendng into the path' of movenient of the pins 'on the disk, the lower end of one ofsaid latchesbeing formed with a shoulder `engaging one'osaid links lto prevent an upward movement thereof and of the corresponding contact member, the other of saidlatches having a hook-shapedl ter-l minal end engaging with a hook-shaped terminal end on the corresponding link to prevent a'downward movement of the latter, and a spring adapted'to urge the latches out of operative position.

'- it. Inan electric time switch, the combination with a pair of switch blades, contact inembers, one for each-oitl said switch blades, means yieldingly urging one of said switch blades out of engagement with its corresponding contact member and the other blade intor such engagement, of a clock-actuated disk vprovided-with a series of perforations up/on its margin, a pair of pins shift-v able into any -of said perforations, one of from one side of the projecting from the other side of the disk, and means disposed vin the path of the pins and releasable there-v by for holding the first named blade out ot engagement .with itscontact member, and the other of said blades in engagement with its Contact member.

5. In an electric time switch the combination with a pair of switch' blades, a pair of corresponding contact members and yielding means foriirging. one of said blades into engagement latches pivoted with its cont-act member and 1 Athe other of said blades out of such engage-- ment,.of clock actuated mechanism ineluding a disk provided with marginal perforations, pins mounted on the'disk in any one of said perforations and projecting from opposite sides of the disk, a pair of yielding members for holding the switch blades, one

'out ,of engagement with its Contact member against the force of the .means urging it into such engagementand ,the other member *holding the second named blade into engagement With'its Contact' member against Copies ef this patent may be obtained for the force ofl the corresponding urging means, said yielding holding' members being disposed` each in the path of one of said pins 'and being actuated by said pins to successively release said blades.

In testimony whereof, I afiiX my signature in presence of two Witnesses.

`Witnesses y SANA' SLENKER, C. G. CATO.

ve cents each, by addressing the Commissioner of Patents, "Washington, D. C. 

